Joint between h-shaped members and method for producing the joint

ABSTRACT

Method for joining two H-shaped steel members each provided with longitudinal cutouts in a web and in each end of opposite flanges by using in combination a joint having a web and flanges to be fitted into the cutouts. After the H-shaped steel members and the joint are fitted together, the flanges of the H-shaped steel members and the joint in engagement with each other are welded together.

1.1111 11 Stafies inventor Appl. No,

Filed Patented Assignee Priorities Nariyoshi Tsurumi Tokyo, Japan June24, 1970 Dec. 21, 1971 Hitachi Shipbuilding and Engineering (30., Ltd.

Osaka, Japan June 28, 1969 Japan Apr. 25, 1970, Japan, No. 45/355555JOHNT BETWEEN lH-SHAPED MEMBERS AND METHOD ll OR PRODUCING THE .lIQHNT15 Claims, 14 Drawing Figs.

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50] 181616 6156611611.; 287 2. 108, 189.36 R, 189.36 B; 52/726, 729;61/53; 29/155 R, 155 c [56] References Cited UNITED STATES PATENTS1,688,949 10/1928 Wait 287/l89.36R 2,708,828 5/1955 Pruyn 52/726 PrimaryExaminer-John E. Murtagh AttorneyDawson, Tilton, Fallon & LungmusABSTRACT: Method for joining two H-shaped steel members each providedwith longitudinal cutouts in a web and in each end of opposite flangesby using in combination ajoint having a web and flanges to be fittedinto the cutouts. After the Hishaped steel members and the joint arefitted together, the flanges of the lrl-shaped steel members and thejoint in engagement with each other are welded together.

PAH-1mm] M82] 1911 3 6 8 0 sum 1 OF 2 PMENIEB BECZY 19H 35 3 sum 2 UF 2BACKGROUND OF THE INVENTION 1. Field of the Invention The presentinvention relates to a method for joining I-I- shaped steel members andmore particularly to a method for joining in the longitudinal directionH-shaped steel members which are used as columns in framework structuresfor tall buildings.

2. Description of the Prior Art In joining I'I-shaped steel membersconventionally known is a method in which the webs and flanges at theends of the members to be joined together are fitted with gusset platesextending over both ends and the steel members are connected together byrivets or bolts and nuts at the construction site. However, this methodis not only poor in efiiciency and troublesome but it is also difficultto effect connection with high accuracy since joining operation has tobe carried out while an I-I-shaped steel is hoisted by a crane or thelike. For instance, the webs of the H-shaped steel members buttedagainst each other may not be aligned correctly, with the result thatperfect connection for direct transmission of a load is not alwaysachieved. In addition, since it is nearly impossible to produce allIll-shaped steel members in exactly the same shape and dimensions, it isdifficult to snagly fit a flat gusset plate to each flange surface ofthe two I-I-shaped steel members to be joined together when they areemployed to con-.

struct a framework of building, this making it almost infeasible tocarry out a perfect construction work. Furthermore it is known to bringthe respective webs of the H-shaped steel members to be jointed intofitting contact with each other and weld their flanges together withoutusing gusset plates, but this method can not achieve satisfactoryjoining strength due to the fact that the length of the welds is notsufficient. Particularly in the case where the H-shaped steel membersare used as columns of buildings, there is a need to effectmetal-to-metal contact between the sections at the junction so as toinsure transmission of an upper load to the lower structure. This is ofan increasing importance with taller buildings. However, in accordancewith a conventional method, a small clearance is liable to be formedbetween such sections at the junction, with the result that the upperload is delivered downward through gusset plates or welds to result inpossible breakage of the junction and a serious accident. Further infabricating a framework structure for a building, it is desired to joina beam member to a junction of H-shaped steel columns but withconventional joining method such connection of the beam member at thejunction has to be avoided, since the junction is a weak point in thestructure.

SUMMARY OF THE INVENTION The problems described above have been overcomeby as sembling III-shaped steel members to be joined and a joint,

I each of the I-I-shaped steel members being provided at its end with atleast one longitudinal cutout in a web and longitudinal cutouts formedin the opposite sides of flanges in facing relationship and disposedsymmetrically of the web, the joint being provided with a web andflanges to be fitted into the cutouts in the webs and flanges of theI-I-shaped steel members, about half the length of the joint beingadapted to be incorporated into each H-shaped steel member. Forassemblage, the center of width of web in the joint is fltted into thecutouts in the webs of the I-I-shaped steel members to be joinedtogether and the opposite ends of flanges of the joint into the cutoutsin the opposite flanges of the I-I-shaped steel members, the H-shapedsteel members butting against each other. The butting portions of theI-I-shaped steel members and the junctions of the H-shaped steel memberswith the flanges of the joint are welded together. To carry out weldingoperation, one half side of the joint may be welded to one I-I-shapesteel member previously in a factory and then at a construction steelmember previously in a factory and then at a construction sit the otherI-I-shaped steel member may be fitted to the joined body to weld it tothe joint and the first I'I-shaped steel member. Altematcly, H-shapedsteel members to be jointed together and joint may be carried separatelyto a construction site, where they are brought together for welding.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will become moreapparent from the following description with reference to theaccompanying drawings, in which:

FIG. I is a perspective view showing an end of an I-I-shaped steelmember to be joined by the method of the present invention;

FIG. 2 is a perspective view showing a joint in accordance with thepresent invention;

FIG. 3 is a perspective view showing the I-I-shaped steel member in FIG.1 and the join in FIG. 2 as they are joined and welded together;

FIG. d is a perspective view showing the I-I-shaped steel members joinedtogether in accordance with the method of the present invention;

FIG. 5 is a view in cross section taken along the line 45 in FIG. 4;

FIG. 6 is a view in cross section corresponding to FIG. 5 and showingthe I-I-shaped steel members joined together by a joint which hasprotuberances at the ends of flanges;

FIG. 7 is a view in cross section corresponding to FIG. 5 and showingthe I-Ishaped steel members joined together by a joint which has twowebs;

FIG. 8 is a perspective view showing, the end of an I-I-shaped steelmember to be joined in accordance with another method of the presentinvention;

FIG. 9 is a perspective view showing a joint to be joined with the llshaped steel member illustrated in FIG. 8;

FIG. 10 is a perspective view showing the H-shaped steel member in FIG.b and the joint in FIG. 9 as they are fitted and welded together;

FIG. 11 is a perspective view showing H-shaped steel members in FIG. asthey are joined together;

FIG. 12 is a view in cross section taken along the line 12- 112 in FIG.llll;

FIG. 13 is a view in cross section corresponding to FIG. 12 and showingI-I-shaped steel members joined together by a joint which has flangeswhose width is such that the flanges project slightly outward from theflanges of the I-Ishaped steel members when fitted thereto; and

FIG. M is a perspective view showing an embodiment in which a beam isjoined with I-I-shaped s'teel members by means of a joint, theI-I-shaped members being shown in separated form.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An I-I-shaped steel member 11shown in FIG. ll comprises a web 2 and flanges 3, the web 2 being formedwith a longitudinal cutout 4 at the middle of its width. Formed in eachof the flanges 3 in facing relationship are longitudinal cutouts 5disposed close to the opposite ends of the flange 3 symmetrically of theweb 2.

A joint 6 shown in FIG. 2 is Ill-shaped in cross section the same as theI-I-shaped steel member and provided with a web 7 and flanges 8, thelength of the joint 6 being determined in view of the strength at thejunction. The depth of the cutouts 4i and 5 is about half of the lengthof the joint 6.

For assemblage of the H-shaped steel member I with the joint 6, it willbe seen in FIG. 3 that the lower half of the joint 6 is fitted coaxiallyinto the end of one of the I-I-shaped steel members to be jointedtogether, utilizing the cutouts 4 and 5, the webs of the joint 6 and thesteel member 1 being at a right angle with each other (see FIG. 5). Whenthe joint 6 and the H-shaped steel member 1 are fitted together in thismanner, the flanges 8 of the former project slightly outward from theflanges 3 of thelatter. The external parts of the junctions of theflanges 3 and 8 are then welded together. The welds are designated at 9.

Next, the other l-I-shaped steel member 10 having an end of the sameshape as the end of the H-shaped steel member 1 is brought into fittingengagement with the upper half of the joint 6 in the same manner as withthe foregoing as shown in a chain line in FIG. 3 for connection with thejoint 6. At this time, the web 2 of the H-shaped steel member 1 buttsagainst the web 11 of the H-shaped steel member 10 and the flanges 8 ofthe I-I-shaped steel member 1 against the flanges 12 of the I-I-shapedsteel member 10. To insure such butting contact, the cutouts 4 and 5 ofthe .H-shaped steel members 1 and may preferably be made slightly longerthan the half of length of the joint 6. Finally, the butting portions ofthe flanges 3 and 12 are welded together and the external parts of thejunctions between the flanges 12 of the H-shaped steel member 10 and theflanges 8 of the joint 6 which are projecting outwardly of the flanges12 are welded. Designated at 13 and 14 are welds thus provided.

In making the above assemblage, the cutouts 4 and 5 in the H-shapedsteel members 1 and 10 serve as guide for the fitting engagement of theweb 7 and flanges 8 of the joint 6 with the cutouts, so that thefabrication can be effected smoothly and readily with a very small errorof connection. In addition, a very great total length of the weldsinsures strong welding effects.

FIG. 6 illustrates a modified embodiment of joint. The joint 21, beingprovided with protuberances 8a at the opposite ends of flanges 8,permits more reliable welding operation.

Another modified embodiment of joint is shown in FIG. 7. Betweenopposite flanges 8, the joint 31 has two webs 32 which are disposedsymmetrically with respect to the middle of width of the flanges 8. Theends of webs 2, 11 of the H- shaped steel members 1, 10 will be formedwith two cutouts 33 for fitting engagement with webs 32 of the joint 31.The joint 31 is made up of two I-I-shaped steel members which arejointed with each other at one side end of the respective flanges bybeing welded in horizontal direction. The numeral 34 indicates the weld.The use of the joint 31 in joining the H- shaped steel members 1 and 10results in a junction of a greater strength.

FIGS. 8 to 12 show another embodiment of this invention. An I-I-shapedsteel member 41 in FIG. 8 comprises a web 42 and flanges 43, alongitudinal cutout 44 being formed at the middle of width of the web42. Unlike the groovelike cutouts 5 in the H-shaped steel member 1 inFIG. 1, longitudinal cutouts 45, each of which is open at one side, areformed at the opposite ends of the flanges 43.

A joint 46 seen in FIG. 9 is similar to the joint 6 in FIG. 2 in that itis of H-shaped cross section and in that it comprises a web 47 andflanges 48. However, as an important feature of this embodiment, thejoint 46 as apparent from FIG. 12 is of such dimensions that when joinedwith the I-I-shaped steel member 41 the joint 46 forms a square alongwith the member 41.

The assemblage and welding of the H-shaped steel member 41 and the joint46 and further assemblage and welding of a resultant joined with bodywith the other H-shaped steel member 49 provided with a web 50 andflanges 51 will be car ried out substantially in the same manner asalready described with reference to FIGS. 3 to 5, the procedures to befollowed being readily understood from FIGS. 10 to 12. In these figures,numerals 52, 53 and 54 indicate welds. In these figures, numerals 52,provided in this embodiment is V groove weld.

The junction described above is less likely to deteriorate theappearance since the joining portions have no external projections.

FIG. 13 shows a joint 61, another modification, which has flanges 62whose width is such that the flanges project slightly outward from theflanges 43 of the I-I-shaped steel member 41 when brought intoengagement therewith. In this case, fillet welds 63 are provided.

FIG. 14 illustrates framework construction in which the H- shaped steelmembers are to be joined with beams 71 by utilizing a joint 46, the beam71 further supporting floor members 72. In the case where l-I-shapedsteel members 41 and 49 joined together by the joint 46 are to be usedas a column with which beams will be connected, the beams 71 may beconnected to the flanges 48 of the joint 46 on their side faces whichare positioned on the opposite sides of the webs of the H-shaped steelmembers 41 and 49 when the joint 46 is connected with the members 41 and49. Employed as the beams 71 are two channels whose opposite ends arewelded to the external sides of flanges 48 of the joints 46. Welding maybe conducted at the construction site, or the joints 46 and the beams 71may be welded together at a factory prior to the joining of the H-shapedsteel members 41 and 49. If there is a need to join floor members 72,the floor members 72 may be fixed to the beams 71. This can of course beperformed in a factory in advance.

Because beams 71 can be very readily fixed to the planes on the sides ofwebs of H-shaped steel members 41, 49 by utilizing the faces of flanges48 of the joint 46, framework construction for tall buildings can becarried out from a floor to an adjacent upper floor in sequence. Thepresent method makes it possible, for instance, to furnish interiorfittings on a floor while framework is being constructed on upperfloors, hence a substantial reduction of construction period can beachieved.

Because the I-I-shaped steel members can be joined together with a greatease at a construction site in accordance with this invention,troublesome procedures conventionally experienced such as application ofgusset plates and connection by rivets or bolts and nuts can bedispensed with to insure savings in labor and marked reduction ofconstruction period. In addition, since the I-I-shaped steel members arejoined together with an intermediate joint which is approximatelyidentical therewith in section but is disposed in a different direction,the junction is extremely high in strength and well capable ofwithstanding stress such as torsion. The fact that the l-l-shaped steelmembers are in contact with each other at respective ends produces agood result of transmitting the load directly through the junction. Forthese reasons, when the H- shaped steel members are used as columns in aframework structure of a building, the junctions do not impair butrather serve to increase the strength of the structure. Connection ofbeams to the junctions which has conventionally been difficult to makeis also insured.

What I claim as my invention is:

1. A method for joining l-I-shaped steel members comprising assemblingH-shaped steel members to be joined together and a joint so as to buttsaid I-I-shaped steel members, each of said H-shaped steel members beingprovided at its end with at least one cutout in a web cutouts formed inrespective flanges symmetrically on the opposite side of said web, saidjoint being provided with at least one web and two flanges to be fittedinto said cutouts and welding the butting portions of the flanges ofsaid H-shaped steel members and junctions of the flanges of saidl-I-shaped steel members with the flanges of said joint.

2. The method as claimed in claim 1 wherein the depth of said cutouts isat least half the length of said joint.

3. The method as claimed in claim 1 wherein said cutouts in each flangeof said I-I-shaped steel member are positioned on the opposite sides ofsaid web and formed in the shape of groove inwardly of the oppositeedges of said flange.

4. A method for joining H-shaped steel members comprising assemblingH-shaped steel members to be joined together and a joint so as to buttsaid H-shaped steel members, each of said H-shaped steel members beingprovided at its end with at least one cutout in a web and cutouts formedin respective flanges symmetrically on the opposite sides of said web,said joint being provided with at least one web and two flanges to befitted into said cutouts and having such a width that when said flangesare fitted into each other said joint slightly projects outward from theflanges of said H-shaped steel members and welding the butting portionsof the flanges of said I-I-shaped steel members and junctions of theflanges of said H-shaped steel members with the flanges of said joint.

5. The method as claimed in claim 4 wherein each flange of said joint isprovided with protuberances each formed along the entire length of eachend thereof.

6. A method for joining H-shaped steel members comprising assemblingl-l-shaped steel members to be joined together and a joint so as to buttsaid H-shaped steel members, each of said H-shaped steel members beingprovided at its end with cutouts in a web symmetrically of the middlethereof and cutouts formed in respective flanges symmetrically on theopposite sides of said web, said joint being provided with two webs andtwo flanges to be fitted into said cutouts and welding the buttingportions of the flanges of said H-shaped steel members an junctions ofthe flanges of said H-shaped steel members with the flanges of saidjoint.

7. A method for joining i-Lshaped steel members comprising steps offorming the end of each of two H-shaped steel members to be joinedtogether a cutout in the middle of a web and cutouts in opposite flangessymmetrically on the opposite sides of the web; disposing a joint ofl-l-shaped cross section coaxially with one of said H-shaped steelmembers with a web thereof intersecting said web at a right angle tobring the web and flanges in the lower half of said joint into fittingengagement with the cutouts in said H-shaped steel member, externallywelding the junction of the web of said H-shaped steel member and theweb of said joint; fitting the upper half of said joint into the cutoutsof the other H-shaped steel member to butt both lid-shaped steelmembers; and externally welding the butting portions of the flanges ofaid l-l-shaped steel members and the junctions of the flanges of saidjoint with the flanges of said H-shaped steel member joined later.

8. A method for joining H-shaped steel members comprising assemblingH-shaped steel members to be joined together and a joint so as to buttsaid H-shaped steel members, each of said H-shaped steel members beingprovided at its end with at least one cutout in a web and cutouts openedat a side and formed at both edges of respective flanges symmetricallyof said web, said joint being provided with at least one web and twoflanges to be fitted to said cutouts and having such a width that whensaid flanges are engaged with each other said joint does not projectoutwardly from the flanges of said H-shaped steel members and weldingthe butting portions of the flanges of said H-shaped steel members andjunctions of the flanges of said l-l-shaped steel members with theflanges of said joint.

9. The method as claimed in claim 8 wherein the welding is conducted toprovide V groove welds.

10. The method as claimed in claim 8 wherein the flange of said jointbeing provided with a beam member welded to its outer face in advance.

ill. The method as claimed in claim 8 wherein floor members are weldedto said beam member in advance.

12. A method for joining H-shaped steel members comprising steps offorming in the end of each of two l-l-shaped steel members to be joinedtogether a cutout in the middle of a web and cutouts at both edges ofopposite flanges symmetrically of the web; welding in advance a beammember to the outer face of at least one flange of a joint of l-l-shapedcross section; disposing said joint coaxially with one of said H-shapedsteel members with a web thereof intersecting said web at a right angleto bring the web and flanges in the lower half of said joint intofitting engagement with said cutouts in said H- shaped steel memberwithout projecting said joint outward; externally welding the junctionof the web of said H shaped steel member and the web of said joint;fitting the upper half of said joint to said cutouts of the otherH-shaped steel member without projecting said joint outward to therebybutt both H-shaped steel members; and externally welding the buttingportions of the flanges of said ll-l-shaped steel members and thejunctions of the flanges of said joint and the flanges of said H-shapedsteel member joined later.

13. A structure comprising two H-shaped steel members and a joint, eachof said H-shaped steel members being provlded at its end with at leastone cutout in a web and cutouts formed in respective flangessymmetrically on the opposite sides of said web, said joint having alength not exceeding twice the depth of said cutouts, each half of saidjoint being in fitting engagement with the cutouts of each H-shapedsteel member, said H-shaped steel members being welded together inbutting contact with each other.

M. A structure comprising two l-l-shaped steel members, a joint ofl-l-shaped cross section and a beam member, each of said H-shaped steelmembers being provided at its end with at least one cutout in a web andcutouts opened at a side and formed at both edges of respective flangessymmetrically of said web, said joint having a length not exceedingtwice the depth of said cutouts, each half of said joint being infitting engagement with the cutouts of each HI-shaped steel member, saidH-shaped steel members being welded together in butting contact witheach other, at least one flange of said joint being provided with a beammember fixed to its outer face.

15. A structure comprising two H-shaped steel members and a joint, eachof said H-shaped steel members being provided at its end with twocutouts formed in its web symmetrically with respect to the middle ofwidth thereof and cutouts formed in each of its flange symmetrically onthe opposite sides of the web, said joint being provided with two websand two flanges to be fitted into said cutouts and having a length notexceeding twice the depth of said cutouts, said two H- shaped steelmembers being welded together in butting contact with each other witheach half of said joint fitted in said cutouts of each H-shaped steelmember.

1. A method for joining H-shaped steel members comprising assemblingH-shaped steel members to be joined together and a joint so as to buttsaid H-shaped steel members, each of said Hshaped steel members beingprovided at its end with at least one cutout in a web cutouts formed inrespective flanges symmetrically on the opposite side of said web, saidjoint being provided with at least one web and two flanges to be fiTtedinto said cutouts and welding the butting portions of the flanges ofsaid H-shaped steel members and junctions of the flanges of saidH-shaped steel members with the flanges of said joint.
 2. The method asclaimed in claim 1 wherein the depth of said cutouts is at least halfthe length of said joint.
 3. The method as claimed in claim 1 whereinsaid cutouts in each flange of said H-shaped steel member are positionedon the opposite sides of said web and formed in the shape of grooveinwardly of the opposite edges of said flange.
 4. A method for joiningH-shaped steel members comprising assembling H-shaped steel members tobe joined together and a joint so as to butt said H-shaped steelmembers, each of said H-shaped steel members being provided at its endwith at least one cutout in a web and cutouts formed in respectiveflanges symmetrically on the opposite sides of said web, said jointbeing provided with at least one web and two flanges to be fitted intosaid cutouts and having such a width that when said flanges are fittedinto each other said joint slightly projects outward from the flanges ofsaid H-shaped steel members and welding the butting portions of theflanges of said H-shaped steel members and junctions of the flanges ofsaid H-shaped steel members with the flanges of said joint.
 5. Themethod as claimed in claim 4 wherein each flange of said joint isprovided with protuberances each formed along the entire length of eachend thereof.
 6. A method for joining H-shaped steel members comprisingassembling H-shaped steel members to be joined together and a joint soas to butt said H-shaped steel members, each of said H-shaped steelmembers being provided at its end with cutouts in a web symmetrically ofthe middle thereof and cutouts formed in respective flangessymmetrically on the opposite sides of said web, said joint beingprovided with two webs and two flanges to be fitted into said cutoutsand welding the butting portions of the flanges of said H-shaped steelmembers an junctions of the flanges of said H-shaped steel members withthe flanges of said joint.
 7. A method for joining H-shaped steelmembers comprising steps of forming the end of each of two H-shapedsteel members to be joined together a cutout in the middle of a web andcutouts in opposite flanges symmetrically on the opposite sides of theweb; disposing a joint of H-shaped cross section coaxially with one ofsaid H-shaped steel members with a web thereof intersecting said web ata right angle to bring the web and flanges in the lower half of saidjoint into fitting engagement with the cutouts in said H-shaped steelmember, externally welding the junction of the web of said H-shapedsteel member and the web of said joint; fitting the upper half of saidjoint into the cutouts of the other H-shaped steel member to butt bothH-shaped steel members; and externally welding the butting portions ofthe flanges of aid H-shaped steel members and the junctions of theflanges of said joint with the flanges of said H-shaped steel memberjoined later.
 8. A method for joining H-shaped steel members comprisingassembling H-shaped steel members to be joined together and a joint soas to butt said H-shaped steel members, each of said H-shaped steelmembers being provided at its end with at least one cutout in a web andcutouts opened at a side and formed at both edges of respective flangessymmetrically of said web, said joint being provided with at least oneweb and two flanges to be fitted to said cutouts and having such a widththat when said flanges are engaged with each other said joint does notproject outwardly from the flanges of said H-shaped steel members andwelding the butting portions of the flanges of said H-shaped steelmembers and junctions of the flanges of said H-shaped steel members withthe flanges of said joint.
 9. The method as claimed in claim 8 whereinthe welding is conducted to provide V groove welds.
 10. The method asclaimed in claim 8 wherein the flange of said joint being provided witha beam member welded to its outer face in advance.
 11. The method asclaimed in claim 8 wherein floor members are welded to said beam memberin advance.
 12. A method for joining H-shaped steel members comprisingsteps of forming in the end of each of two H-shaped steel members to bejoined together a cutout in the middle of a web and cutouts at bothedges of opposite flanges symmetrically of the web; welding in advance abeam member to the outer face of at least one flange of a joint ofH-shaped cross section; disposing said joint coaxially with one of saidH-shaped steel members with a web thereof intersecting said web at aright angle to bring the web and flanges in the lower half of said jointinto fitting engagement with said cutouts in said H-shaped steel memberwithout projecting said joint outward; externally welding the junctionof the web of said H-shaped steel member and the web of said joint;fitting the upper half of said joint to said cutouts of the otherH-shaped steel member without projecting said joint outward to therebybutt both H-shaped steel members; and externally welding the buttingportions of the flanges of said H-shaped steel members and the junctionsof the flanges of said joint and the flanges of said H-shaped steelmember joined later.
 13. A structure comprising two H-shaped steelmembers and a joint, each of said H-shaped steel members being providedat its end with at least one cutout in a web and cutouts formed inrespective flanges symmetrically on the opposite sides of said web, saidjoint having a length not exceeding twice the depth of said cutouts,each half of said joint being in fitting engagement with the cutouts ofeach H-shaped steel member, said H-shaped steel members being weldedtogether in butting contact with each other.
 14. A structure comprisingtwo H-shaped steel members, a joint of H-shaped cross section and a beammember, each of said H-shaped steel members being provided at its endwith at least one cutout in a web and cutouts opened at a side andformed at both edges of respective flanges symmetrically of said web,said joint having a length not exceeding twice the depth of saidcutouts, each half of said joint being in fitting engagement with thecutouts of each H-shaped steel member, said H-shaped steel members beingwelded together in butting contact with each other, at least one flangeof said joint being provided with a beam member fixed to its outer face.15. A structure comprising two H-shaped steel members and a joint, eachof said H-shaped steel members being provided at its end with twocutouts formed in its web symmetrically with respect to the middle ofwidth thereof and cutouts formed in each of its flange symmetrically onthe opposite sides of the web, said joint being provided with two websand two flanges to be fitted into said cutouts and having a length notexceeding twice the depth of said cutouts, said two H-shaped steelmembers being welded together in butting contact with each other witheach half of said joint fitted in said cutouts of each H-shaped steelmember.